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14577f239f
The patch fixes association failure (reason = 18) bug by arranging CCK rates before OFDM rates. This patch will register with mac80211 the modified rate arrangement with CCK rate first. Change rate scale algorithm also to deal with rate change. Fix Txpower and rate Table commands to be constructed correctly after rearrangement. Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
211 lines
6.1 KiB
C
211 lines
6.1 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#ifndef __iwl_3945_rs_h__
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#define __iwl_3945_rs_h__
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struct iwl_rate_info {
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u8 plcp;
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u8 ieee;
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u8 prev_ieee; /* previous rate in IEEE speeds */
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u8 next_ieee; /* next rate in IEEE speeds */
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u8 prev_rs; /* previous rate used in rs algo */
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u8 next_rs; /* next rate used in rs algo */
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u8 prev_rs_tgg; /* previous rate used in TGG rs algo */
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u8 next_rs_tgg; /* next rate used in TGG rs algo */
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u8 table_rs_index; /* index in rate scale table cmd */
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u8 prev_table_rs; /* prev in rate table cmd */
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};
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enum {
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IWL_RATE_1M_INDEX = 0,
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IWL_RATE_2M_INDEX,
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IWL_RATE_5M_INDEX,
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IWL_RATE_11M_INDEX,
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IWL_RATE_6M_INDEX,
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IWL_RATE_9M_INDEX,
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IWL_RATE_12M_INDEX,
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IWL_RATE_18M_INDEX,
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IWL_RATE_24M_INDEX,
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IWL_RATE_36M_INDEX,
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IWL_RATE_48M_INDEX,
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IWL_RATE_54M_INDEX,
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IWL_RATE_COUNT,
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IWL_RATE_INVM_INDEX,
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IWL_RATE_INVALID = IWL_RATE_INVM_INDEX
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};
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enum {
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IWL_RATE_6M_INDEX_TABLE = 0,
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IWL_RATE_9M_INDEX_TABLE,
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IWL_RATE_12M_INDEX_TABLE,
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IWL_RATE_18M_INDEX_TABLE,
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IWL_RATE_24M_INDEX_TABLE,
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IWL_RATE_36M_INDEX_TABLE,
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IWL_RATE_48M_INDEX_TABLE,
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IWL_RATE_54M_INDEX_TABLE,
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IWL_RATE_1M_INDEX_TABLE,
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IWL_RATE_2M_INDEX_TABLE,
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IWL_RATE_5M_INDEX_TABLE,
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IWL_RATE_11M_INDEX_TABLE,
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IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX,
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};
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enum {
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IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
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IWL_LAST_OFDM_RATE = IWL_RATE_54M_INDEX,
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IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
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IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
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};
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/* #define vs. enum to keep from defaulting to 'large integer' */
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#define IWL_RATE_6M_MASK (1<<IWL_RATE_6M_INDEX)
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#define IWL_RATE_9M_MASK (1<<IWL_RATE_9M_INDEX)
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#define IWL_RATE_12M_MASK (1<<IWL_RATE_12M_INDEX)
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#define IWL_RATE_18M_MASK (1<<IWL_RATE_18M_INDEX)
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#define IWL_RATE_24M_MASK (1<<IWL_RATE_24M_INDEX)
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#define IWL_RATE_36M_MASK (1<<IWL_RATE_36M_INDEX)
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#define IWL_RATE_48M_MASK (1<<IWL_RATE_48M_INDEX)
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#define IWL_RATE_54M_MASK (1<<IWL_RATE_54M_INDEX)
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#define IWL_RATE_1M_MASK (1<<IWL_RATE_1M_INDEX)
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#define IWL_RATE_2M_MASK (1<<IWL_RATE_2M_INDEX)
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#define IWL_RATE_5M_MASK (1<<IWL_RATE_5M_INDEX)
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#define IWL_RATE_11M_MASK (1<<IWL_RATE_11M_INDEX)
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enum {
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IWL_RATE_6M_PLCP = 13,
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IWL_RATE_9M_PLCP = 15,
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IWL_RATE_12M_PLCP = 5,
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IWL_RATE_18M_PLCP = 7,
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IWL_RATE_24M_PLCP = 9,
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IWL_RATE_36M_PLCP = 11,
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IWL_RATE_48M_PLCP = 1,
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IWL_RATE_54M_PLCP = 3,
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IWL_RATE_1M_PLCP = 10,
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IWL_RATE_2M_PLCP = 20,
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IWL_RATE_5M_PLCP = 55,
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IWL_RATE_11M_PLCP = 110,
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};
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enum {
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IWL_RATE_6M_IEEE = 12,
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IWL_RATE_9M_IEEE = 18,
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IWL_RATE_12M_IEEE = 24,
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IWL_RATE_18M_IEEE = 36,
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IWL_RATE_24M_IEEE = 48,
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IWL_RATE_36M_IEEE = 72,
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IWL_RATE_48M_IEEE = 96,
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IWL_RATE_54M_IEEE = 108,
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IWL_RATE_1M_IEEE = 2,
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IWL_RATE_2M_IEEE = 4,
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IWL_RATE_5M_IEEE = 11,
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IWL_RATE_11M_IEEE = 22,
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};
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#define IWL_CCK_BASIC_RATES_MASK \
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(IWL_RATE_1M_MASK | \
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IWL_RATE_2M_MASK)
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#define IWL_CCK_RATES_MASK \
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(IWL_BASIC_RATES_MASK | \
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IWL_RATE_5M_MASK | \
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IWL_RATE_11M_MASK)
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#define IWL_OFDM_BASIC_RATES_MASK \
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(IWL_RATE_6M_MASK | \
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IWL_RATE_12M_MASK | \
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IWL_RATE_24M_MASK)
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#define IWL_OFDM_RATES_MASK \
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(IWL_OFDM_BASIC_RATES_MASK | \
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IWL_RATE_9M_MASK | \
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IWL_RATE_18M_MASK | \
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IWL_RATE_36M_MASK | \
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IWL_RATE_48M_MASK | \
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IWL_RATE_54M_MASK)
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#define IWL_BASIC_RATES_MASK \
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(IWL_OFDM_BASIC_RATES_MASK | \
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IWL_CCK_BASIC_RATES_MASK)
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#define IWL_RATES_MASK ((1<<IWL_RATE_COUNT)-1)
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#define IWL_INVALID_VALUE -1
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#define IWL_MIN_RSSI_VAL -100
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#define IWL_MAX_RSSI_VAL 0
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extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT];
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static inline u8 iwl_get_prev_ieee_rate(u8 rate_index)
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{
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u8 rate = iwl_rates[rate_index].prev_ieee;
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if (rate == IWL_RATE_INVALID)
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rate = rate_index;
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return rate;
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}
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/**
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* iwl_fill_rs_info - Fill an output text buffer with the rate representation
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*
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* NOTE: This is provided as a quick mechanism for a user to visualize
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* the performance of the rate control alogirthm and is not meant to be
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* parsed software.
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*/
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extern int iwl_fill_rs_info(struct ieee80211_hw *, char *buf, u8 sta_id);
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/**
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* iwl_rate_scale_init - Initialize the rate scale table based on assoc info
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*
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* The specific througput table used is based on the type of network
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* the associated with, including A, B, G, and G w/ TGG protection
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*/
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extern void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id);
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/**
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* iwl_rate_control_register - Register the rate control algorithm callbacks
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*
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* Since the rate control algorithm is hardware specific, there is no need
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* or reason to place it as a stand alone module. The driver can call
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* iwl_rate_control_register in order to register the rate control callbacks
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* with the mac80211 subsystem. This should be performed prior to calling
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* ieee80211_register_hw
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*
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*/
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extern void iwl_rate_control_register(struct ieee80211_hw *hw);
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/**
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* iwl_rate_control_unregister - Unregister the rate control callbacks
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*
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* This should be called after calling ieee80211_unregister_hw, but before
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* the driver is unloaded.
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*/
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extern void iwl_rate_control_unregister(struct ieee80211_hw *hw);
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#endif
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